Results 41 to 50 of about 2,664 (291)

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Improving thermo-mechanical properties of tabular alumina castables via using nano structured colloidal silica [PDF]

, 2011
Great attempts were made to reduce the amount of calcium aluminate cement (CAC) content in refractory castables to improve their hot strength. Using more than 2-3 wt% CAC may cause low melting phases formation in the refractory matrix leading to weak ...
Alireza, S., Fatemeh, K.N., Hossein, S.
core   +2 more sources

Aspectos da hidratação de óxido de magnésio em formulações de concretos refratários Aspects of magnesium oxide hydration in refractory castables compositions

Cerâmica, 2006
Óxido de magnésio (MgO) ou magnésia é uma das matérias primas mais importantes para a indústria de refratários. Graças à sua elevada refratariedade (ponto de fusão da ordem de 2800 ºC) e resistência à corrosão me meios básicos, associadas a custos ...
R. Salomão, L. R. M. Bittencourt, V. C. Pandolfelli   +2 more
doaj   +1 more source

Preparation and properties of low cement castable sintered at different temperatures [PDF]

, 2009
The low cement high alumina castable (LCC) studied in this paper was synthesised, cured and then treated at different sintering temperatures. Since any inhomogeneity introduced during the castable preparation can remain inside the material degrading its ...
Jelena Majstrović, Sanja Martinović, Tatjana Volkov-Husović, Velislav Vidojković   +3 more
core  

Mechanical properties of chemically bonded phosphate refractory castables

Matéria (Rio de Janeiro), 2022
ABSTRACT The knowledge of the phase transformations and the role of different parameters in the performance of phosphate-bonded systems are of utmost importance for the refractory field. The effect of the setting agent, phosphoric acid concentration and additives on the setting time, cold crush strength, hot modulus of rupture, abrasion resistance, and
Adriana Mendes Correa, Modestino Alves de Moura Brito, Sérgio Luiz Cabral da Silva, Vanessa de Freitas Cunha Lins, Rosana Zacarias Domingues   +4 more
openaire   +2 more sources

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Mechanochemically synthesized high alumina cement and their implementation as low cement castables with some micro-fine additives

Journal of Asian Ceramic Societies, 2015
High-energy ball milling viz. mechanochemical process is being utilized to mechanically activate ceramic powders for low temperature solid state reactions. The process can help to select low-cost commercially available oxides and can produce powders with
Vijay Kumar, Vinay Kumar Singh, Abhinav Srivastava, P. Hemanth Kumar   +3 more
doaj   +1 more source

A New Family of Ternary Intermetallic Compounds with Dualistic Atomic Ordering – The ZIP Phases

Advanced Materials, EarlyView.
The ZIP phases are ternary intermetallic compounds with dualistic atomic ordering, i.e., they exhibit one face‐centered cubic (fcc; space group Fd3¯$\bar 3$m) variant and one hexagonal (space group P63/mmc) variant. The ZIP phases in the Nb‐Si‐Ni system are the Nb3SiNi2 (fcc) and Ni3SiNb2 (hexagonal) ternary IMCs, crystal structure schematics of which ...
Matheus A. Tunes, Sean M. Drewry, Franziska Schmidt, James A. Valdez, Matthew M. Schneider, Caitlin A. Kohnert, Tarik A. Saleh, Saryu Fensin, Stuart A. Maloy, Cláudio G. Schön, Sylvain Dubois, Omri Tabo, Anna Eyal, Amit Keren, Asaf Pesach, Ganesh K. Nayak, Stavros‐Richard G. Christopoulos, Marco Molinari, Marcus Hans, Nick Goossens, Shuigen Huang, Jochen M. Schneider, Per O. Å. Persson, Jozef Vleugels, Konstantina Lambrinou   +24 more
wiley   +1 more source

Podem os dispersantes afetar as propriedades dos concretos refratários após a queima? Could the dispersants affect the properties of refractory castables after firing?

Cerâmica, 2009
A aplicação de concretos refratários é um processo em constante evolução e apresenta uma forte dependência dos avanços dos conhecimentos sobre os ligantes hidráulicos.
I. R. Oliveira, V. C. Pandolfelli
doaj   +1 more source

Improvement in Slag Resistance of No-Cement Refractory Castables by Matrix Design

Ceramics, 2020
The corrosion resistance of spinel containing cement bonded castables has been extensively investigated in the past. However, corrosion of no-cement refractory castables (NCC) has not been widely studied since the use of NCC has been relatively limited ...
Hong Peng, Jun Liu, Qinghu Wang, Yawei Li   +3 more
doaj   +1 more source